Jan, If you want to see different frequencies using your code I think you will need to reset TCNT1 to the value you want in your overflow isr. : timer1.isr
\ toggle output PD7 togglePD7 \ reset TCNT1 your-value TCNT1 ! ; However, using CTC mode would be more accurate and efficient. Also if you are not too fussed on your multiplexing frequency then a different choice of timer and prescaler might make it easier. Your C code mentioned 200Hz I think. Have a look at timer0 (8 bit) with a /256 prescaler and an overflow isr. Best wishes, Tristan On 02Nov18 21:33, Jan Kromhout wrote: > Thanks Tristian, > > Yes, I’m looking for something i can use for multplexing 7-segment displays. > But still strange I can’t use this timer freely. > How could we figger out where this oceurs? > > But still thanks again for your helpfull remarks. > > Cheers, > > Jan > > > Verstuurd vanaf mijn iPad > _______________________________________________ > Amforth-devel mailing list for http://amforth.sf.net/ > Amforth-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/amforth-devel _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
